Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications

This paper introduces a novel control approach for Doubly-Fed Induction Generator (DFIG) operating in island mode based on the cascaded control structure with disturbance estimation. The control of the DFIG is a challenging task due to its inherent nonlinearity, fast dynamics, and unpredictable dist...

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Autores principales:	Adnan Osmanovic, Tarik Uzunovic, Asif Sabanovic, Jasmin Velagic
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Disturbance observer DFIG microgrid renewable energy wind energy conversion system island mode operation Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/f594621515f54f118f2dc588a9bb3d5c
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spelling	oai:doaj.org-article:f594621515f54f118f2dc588a9bb3d5c2021-11-18T00:10:06ZDisturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications2169-353610.1109/ACCESS.2021.3124642https://doaj.org/article/f594621515f54f118f2dc588a9bb3d5c2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9597513/https://doaj.org/toc/2169-3536This paper introduces a novel control approach for Doubly-Fed Induction Generator (DFIG) operating in island mode based on the cascaded control structure with disturbance estimation. The control of the DFIG is a challenging task due to its inherent nonlinearity, fast dynamics, and unpredictable disturbances acting on the system. The proposed control structure involves a nominal controller for plant and disturbance observer (DOB) in each of the inner and outer control loop. The first-order disturbance observers are designed to estimate the time-varying and unknown disturbances. With disturbance estimation, the nominal linear dynamics is obtained in both loops. This enables the same approach for designing controllers for the inner and outer loop which significantly simplifies implementation. The controllers are designed based on the demanded error dynamics and ensure stable operation of the system, while proposed DOBs estimate disturbances including external load. Finally, the effectiveness and quality of the proposed control structure were verified through numerical simulations in terms of external disturbances rejection and closed-loop tracking performance.Adnan OsmanovicTarik UzunovicAsif SabanovicJasmin VelagicIEEEarticleDisturbance observerDFIGmicrogridrenewable energywind energy conversion systemisland mode operationElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 149153-149163 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Disturbance observer DFIG microgrid renewable energy wind energy conversion system island mode operation Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Disturbance observer DFIG microgrid renewable energy wind energy conversion system island mode operation Electrical engineering. Electronics. Nuclear engineering TK1-9971 Adnan Osmanovic Tarik Uzunovic Asif Sabanovic Jasmin Velagic Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
description	This paper introduces a novel control approach for Doubly-Fed Induction Generator (DFIG) operating in island mode based on the cascaded control structure with disturbance estimation. The control of the DFIG is a challenging task due to its inherent nonlinearity, fast dynamics, and unpredictable disturbances acting on the system. The proposed control structure involves a nominal controller for plant and disturbance observer (DOB) in each of the inner and outer control loop. The first-order disturbance observers are designed to estimate the time-varying and unknown disturbances. With disturbance estimation, the nominal linear dynamics is obtained in both loops. This enables the same approach for designing controllers for the inner and outer loop which significantly simplifies implementation. The controllers are designed based on the demanded error dynamics and ensure stable operation of the system, while proposed DOBs estimate disturbances including external load. Finally, the effectiveness and quality of the proposed control structure were verified through numerical simulations in terms of external disturbances rejection and closed-loop tracking performance.
format	article
author	Adnan Osmanovic Tarik Uzunovic Asif Sabanovic Jasmin Velagic
author_facet	Adnan Osmanovic Tarik Uzunovic Asif Sabanovic Jasmin Velagic
author_sort	Adnan Osmanovic
title	Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
title_short	Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
title_full	Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
title_fullStr	Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
title_full_unstemmed	Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications
title_sort	disturbance-observer-based control of dfig in island mode for microgrid applications
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/f594621515f54f118f2dc588a9bb3d5c
work_keys_str_mv	AT adnanosmanovic disturbanceobserverbasedcontrolofdfiginislandmodeformicrogridapplications AT tarikuzunovic disturbanceobserverbasedcontrolofdfiginislandmodeformicrogridapplications AT asifsabanovic disturbanceobserverbasedcontrolofdfiginislandmodeformicrogridapplications AT jasminvelagic disturbanceobserverbasedcontrolofdfiginislandmodeformicrogridapplications
_version_	1718425261987332096

Disturbance-Observer-Based Control of DFIG in Island Mode for Microgrid Applications

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